#

# Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

################################################################################

# Support for dtrace integration with libjvm, and stand-alone dtrace library

# compilation.

ifeq ($(call check-jvm-feature, dtrace), true)

  ##############################################################################

  ifeq ($(OPENJDK_TARGET_OS), solaris)

    ############################################################################

    # Integrate with libjvm. Here we generate three object files which are

    # linked with libjvm.so. This step is complicated from a dependency

    # perspective, since it needs the rest of the compiled object files from the

    # libjvm compilation, but the output is object files that are to be included

    # when linking libjvm.so. So this generation must happen as a part of the

    # libjvm compilation.

    # First we need to generate the dtraceGenOffsets tool. When run, this will

    # produce more header files and a C++ file.

    # Note that generateJvmOffsets.cpp must be compiled as if it were a file

    # in the libjvm.so, using JVM_CFLAGS as setup in CompileJvm.gmk. Otherwise

    # this would preferrably have been done as a part of GensrcDtrace.gmk.

    $(eval $(call SetupNativeCompilation, BUILD_DTRACE_GEN_OFFSETS, \

        CC := $(BUILD_CXX), \

        CXX := $(BUILD_CXX), \

        LDEXE := $(BUILD_CXX), \

        generateJvmOffsets.cpp_CXXFLAGS := $(JVM_CFLAGS) -mt -xnolib -norunpath, \

        generateJvmOffsetsMain.c_CFLAGS := -mt -m64 -norunpath -z nodefs, \

        LDFLAGS := -m64, \

        LIBS := -lc, \

        OBJECT_DIR := $(JVM_VARIANT_OUTPUTDIR)/tools/dtrace-gen-offsets/objs, \

        OUTPUT_DIR := $(JVM_VARIANT_OUTPUTDIR)/tools/dtrace-gen-offsets, \

        PROGRAM := dtraceGenOffsets, \

    ))

    DTRACE_GEN_OFFSETS_TOOL := $(BUILD_DTRACE_GEN_OFFSETS_TARGET)

    # Argument 1: Output filename

    # Argument 2: dtrace-gen-offset tool command line option

    define SetupDtraceOffsetsGeneration

      $1: $$(BUILD_DTRACE_GEN_OFFSETS)

	$$(call LogInfo, Generating dtrace $2 file $$(@F))

	$$(call MakeDir, $$(@D))

	$$(call ExecuteWithLog, $$@, ( $$(DTRACE_GEN_OFFSETS_TOOL) -$$(strip $2) > $$@ ) )

      TARGETS += $1

    endef

    JVM_OFFSETS_H := $(DTRACE_SUPPORT_DIR)/JvmOffsets.h

    JVM_OFFSETS_CPP := $(DTRACE_SUPPORT_DIR)/JvmOffsets.cpp

    JVM_OFFSETS_INDEX_H := $(DTRACE_SUPPORT_DIR)/JvmOffsetsIndex.h

    # Run the dtrace-gen-offset tool to generate these three files.

    $(eval $(call SetupDtraceOffsetsGeneration, $(JVM_OFFSETS_H), header))

    $(eval $(call SetupDtraceOffsetsGeneration, $(JVM_OFFSETS_INDEX_H), index))

    $(eval $(call SetupDtraceOffsetsGeneration, $(JVM_OFFSETS_CPP), table))

    ############################################################################

    # Compile JVM_OFFSETS_OBJ which is linked with libjvm.so.

    # JvmOffsets.cpp is compiled without the common JVM_CFLAGS. Otherwise, the

    # natural way would have been to included this source code in BUILD_LIBJVM.

    JVM_OFFSETS_CFLAGS := -m64

    ifeq ($(OPENJDK_TARGET_CPU), sparcv9)

      JVM_OFFSETS_CFLAGS += -xarch=sparc

    endif

    $(JVM_OFFSETS_OBJ): $(JVM_OFFSETS_CPP) $(JVM_OFFSETS_H)

	$(call LogInfo, Compiling dtrace file JvmOffsets.cpp (for libjvm.so))

	$(call ExecuteWithLog, $@, $(CXX) -c -I$(<D) -o $@ $(JVM_OFFSETS_CFLAGS) $<)

    ############################################################################

    # Generate DTRACE_OBJ which is linked with libjvm.so.

    # Concatenate all *.d files into a single file

        hotspot_jni.d \

        hotspot.d \

        hs_private.d \

    )

    $(JVM_OUTPUTDIR)/objs/dtrace.d: $(DTRACE_SOURCE_FILES)

	$(call LogInfo, Generating $(@F))

	$(call MakeDir, $(@D))

	$(CAT) $^ > $@

    DTRACE_INSTRUMENTED_OBJS := $(addprefix $(JVM_OUTPUTDIR)/objs/, \

        ciEnv.o \

        classLoadingService.o \

        compileBroker.o \

        hashtable.o \

        instanceKlass.o \

        java.o \

        jni.o \

        jvm.o \

        memoryManager.o \

        nmethod.o \

        objectMonitor.o \

        runtimeService.o \

        sharedRuntime.o \

        synchronizer.o \

        thread.o \

        unsafe.o \

        vmThread.o \

        vmGCOperations.o \

    )

    ifeq ($(call check-jvm-feature, all-gcs), true)

      DTRACE_INSTRUMENTED_OBJS += $(addprefix $(JVM_OUTPUTDIR)/objs/, \

          vmCMSOperations.o \

          vmPSOperations.o \

      )

    endif

    DTRACE_FLAGS := -64 -G

    DTRACE_CPP_FLAGS := -D_LP64

    # Make sure we run our selected compiler for preprocessing instead of letting

    # the dtrace tool pick it on it's own.

    $(DTRACE_OBJ): $(JVM_OUTPUTDIR)/objs/dtrace.d $(DTRACE_INSTRUMENTED_OBJS)

	$(call LogInfo, Generating $(@F) from $(<F) and object files)

	$(call MakeDir, $(DTRACE_SUPPORT_DIR))

	$(call ExecuteWithLog, $(DTRACE_SUPPORT_DIR)/$(@F).d, $(CC) -E \

	    $(DTRACE_CPP_FLAGS) $< > $(DTRACE_SUPPORT_DIR)/$(@F).d)

	$(call ExecuteWithLog, $@, $(DTRACE) $(DTRACE_FLAGS) -xlazyload -o $@ \

	    -s $(DTRACE_SUPPORT_DIR)/$(@F).d $(sort $(DTRACE_INSTRUMENTED_OBJS)))

    ############################################################################

    # Generate DTRACE_JHELPER_OBJ which is linked with libjvm.so.

    # Unfortunately dtrace generates incorrect types for some symbols in

    # dtrace_jhelper.o, resulting in "warning: symbol X has differing types"

    # This is tracked in JDK-6890703.

        $(JVM_OFFSETS_INDEX_H)

	$(call LogInfo, Running dtrace for $(<F))

	$(call ExecuteWithLog, $@, $(DTRACE) $(DTRACE_FLAGS) $(DTRACE_CPP_FLAGS) -C \

	    -I$(DTRACE_SUPPORT_DIR) -o $@ -s $<)

    # NOTE: We should really do something like this, but unfortunately this

    # results in a compilation error. :-(

    # $(call MakeDir, $(DTRACE_SUPPORT_DIR))

    # $(call ExecuteWithLog, $(DTRACE_SUPPORT_DIR)/$(@F).d, $(CC) -E \

    #     $(DTRACE_CPP_FLAGS) -I$(DTRACE_SUPPORT_DIR) $^ \

    #     > $(DTRACE_SUPPORT_DIR)/$(@F).d)

    # $(call ExecuteWithLog, $@, $(DTRACE) $(DTRACE_FLAGS) -o $@ \

    #     -s $(DTRACE_SUPPORT_DIR)/$(@F).d)

    ############################################################################

    # Build the stand-alone dtrace libraries

    LIBJVM_DTRACE_OUTPUTDIR := $(JVM_VARIANT_OUTPUTDIR)/libjvm_dtrace

    $(eval $(call SetupNativeCompilation, BUILD_LIBJVM_DTRACE, \

        LIBRARY := jvm_dtrace, \

        OUTPUT_DIR := $(JVM_LIB_OUTPUTDIR), \

        CFLAGS := -m64 -G -mt -KPIC, \

        LDFLAGS := -m64 -mt -xnolib $(SHARED_LIBRARY_FLAGS), \

        LIBS := $(LIBDL) -lc -lthread -ldoor, \

        OBJECT_DIR := $(LIBJVM_DTRACE_OUTPUTDIR)/objs, \

    ))

    LIBJVM_DB_OUTPUTDIR := $(JVM_VARIANT_OUTPUTDIR)/libjvm_db

    # Note that libjvm_db.c has tests for COMPILER2, but this was never set by

    # the old build.

    $(eval $(call SetupNativeCompilation, BUILD_LIBJVM_DB, \

        LIBRARY := jvm_db, \

        OUTPUT_DIR := $(JVM_LIB_OUTPUTDIR), \

        CFLAGS := -I$(JVM_VARIANT_OUTPUTDIR)/gensrc -I$(DTRACE_SUPPORT_DIR) \

            -m64 -G -mt -KPIC, \

        LDFLAGS := -m64 -mt -xnolib $(SHARED_LIBRARY_FLAGS), \

        LIBS := -lc, \

        OBJECT_DIR := $(LIBJVM_DB_OUTPUTDIR)/objs, \

    ))

    # We need the generated JvmOffsets.h before we can compile the libjvm_db source code.

    $(BUILD_LIBJVM_DB_ALL_OBJS): $(JVM_OFFSETS_H)

    TARGETS += $(BUILD_LIBJVM_DTRACE) $(BUILD_LIBJVM_DB)

  endif

endif